This bug was fixed in the package grub2-signed - 1.93.14
--------------- grub2-signed (1.93.14) bionic; urgency=medium
* Rebuild against grub2 2.02-2ubuntu8.13. (LP: #1787630) (LP: #564853)
-- Mathieu Trudel-Lapierre <email address hidden> Mon, 18 Mar 2019 14:24:36 -0400
This bug was fixed in the package grub2-signed - 1.93.14
---------------
grub2-signed (1.93.14) bionic; urgency=medium
* Rebuild against grub2 2.02-2ubuntu8.13. (LP: #1787630) (LP: #564853)
-- Mathieu Trudel-Lapierre <email address hidden> Mon, 18 Mar 2019 14:24:36 -0400